AU to Light Years Conversion Table

View a astronomical unit to light year conversion chart with common values, an accurate formula, and related length tables.

Conversion chart

Common astronomical units to light years values, generated from the selected units.

astronomical units (AU)	light years (ly)
1 astronomical unit	0.00001581 light years
2 astronomical units	0.00003163 light years
5 astronomical units	0.00007906 light years
10 astronomical units	0.00015813 light years
15 astronomical units	0.00023719 light years
20 astronomical units	0.00031625 light years
25 astronomical units	0.00039531 light years
30 astronomical units	0.00047438 light years
40 astronomical units	0.0006325 light years
50 astronomical units	0.00079063 light years
75 astronomical units	0.00118594 light years
100 astronomical units	0.00158125 light years

Common values

Common astronomical units to light years values, generated from the selected units.

astronomical units (AU)	light years (ly)
1 astronomical unit	0.00001581 light years
5 astronomical units	0.00007906 light years
10 astronomical units	0.00015813 light years
20 astronomical units	0.00031625 light years
50 astronomical units	0.00079063 light years
100 astronomical units	0.00158125 light years

Conversion Formula

Divide the value in astronomical units by 63241.07708426628 to get light years.

Formulaly = AU ÷ 63241.07708426628

Example

Convert 10 astronomical units to light years:

10 ÷ 63241.07708426628= 0.00015813 ly

Frequently asked questions

How many light years are in 1 astronomical unit?

1 astronomical unit equals 0.000015812507 light years.

How do you convert astronomical units to light years?

Divide the value in astronomical units by 63241.07708426628 to get light years. The formula is ly = AU ÷ 63241.07708426628.

What is 10 astronomical units in light years?

10 astronomical units is approximately 0.00015813 light years.